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Sudoku for travel
Printable booklets that work at 35,000 feet. No app, no signal, no signup — just paper and a pencil.
Why paper still beats an app
In-flight Wi-Fi is unreliable, expensive and slow. Battery lasts longer without a bright screen. And there's a real, if unquantifiable, pleasure in doing a Sudoku with a pencil in your hand instead of thumbing at glass. For travel, printable Sudoku booklets remain the best format — and Zeloku's are entirely free, with no watermark, no ads, and full solutions at the back.
Recommended packs by trip length
- Short flight or commute (30–90 min): 20 Easy Sudoku — several complete solves per trip.
- Medium-haul (3–6 hours): 20 Medium Sudoku — the sweet spot for a whole flight.
- Long-haul (8+ hours): Hard Sudoku booklet — one board per hour, roughly.
- Family road trip: Kids 6×6 pack for ages 7–10 in the back seat.
Printing tips for travel
- Print duplex (both sides) to halve the paper. Zeloku's PDF is duplex-ready.
- Print at 90–95% scale to leave a margin your pencil-marks can breathe into.
- Save the PDF to your phone before you fly — a backup that survives spilled coffee.
- Bring a mechanical pencil (0.5mm) — it survives cabin pressure better than a wooden one, and the point doesn't wear down.
Also see
- All Zeloku printable Sudoku packs
- Sudoku before bed — for the return flight, when you can't sleep.
- 10 beginner tips — for the seatmate you rope in.